|Represent|Contestant|Age|Height|Hometown|
|---|---|---|---|---|
|1|Mildred Kincaid Adames|20|1.65 mts|Panama City|
|2|Catherine Henderson Tudisco|20|1.66 mts|Panama City|
|3|Giovanna Alida Loaiza|21|1.67 mts|Panama City|
|4|Reyna Royo|24|1.69 mts|Panama City|
|5|Ivonne Ileana Correa Turney|23|1.70 mts|Panama City|
|6|Karol Guevara|22|1.70 mts|Panama City|
|7|Betzy Janette Achurra Castillo|20|1.70 mts|Panama City|
|8|Marisela Moreno Montero|24|1.73 mts|Panama City|
|9|Patricia De León|19|1.74 mts|Panama City|
|10|Marichelle Julieta Ruiz Leone|20|1.74 mts|Panama City|
|11|Betsy Milena Batista|21|1.75 mts|Panama City|
|12|Lourdes Rodriguez|21|1.75 mts|Panama City|
|13|Janessy Jasiell Contreras Ibarra|18|1.75 mts|Panama City|
|14|Gina Larissa Correa Hils|20|1.76 mts|Panama City|
|15|Swany Cisney Castillo|23|1.78 mts|Panama City|
|16|Michelle Krisko Sugasti|20|1.80mts|Panama City|

Question: how many contestants are 20 years old?
Answer: 6